the following questions: Consider the following snippet of MIPS code and answer SW r16, 12(r6) lw...

 

Transcribed Image Text:

the following questions: Consider the following snippet of MIPS code and answer SW r16, 12(r6) lw r16, 8(r6) add r5,r1,r16 slt r3,r5,r4 Consider the MIPS pipeline architecture we have been discussing in class and consider the following latencies for the 5 stages of the pipeline IF 100 ps ID 120 ps EX 150 ps MEM 180 ps WB 100 ps (a) What is the cycle duration? Explain why. (a) Draw a diagram like the one at the bottom of slide 57 for the four instructions above. You should consider that there are no structural hazards and that data hazards are taken care of by stalling the processor. Indicate by a bubble each cycle in which the processor stalls. How long does it take to execute all four instructions? (b) Consider now that forwarding can be used to mitigate data hazards. Draw a diagram like the one at the bottom of slide 57 for the four instructions above. Clearly indicate any forwardings that may be needed to mitigate processor stalling. You should consider that there are no structural hazards. Indicate by a bubble each cycle in which the processor stalls. How long does it take to execute all four instructions? the following questions: Consider the following snippet of MIPS code and answer SW r16, 12(r6) lw r16, 8(r6) add r5,r1,r16 slt r3,r5,r4 Consider the MIPS pipeline architecture we have been discussing in class and consider the following latencies for the 5 stages of the pipeline IF 100 ps ID 120 ps EX 150 ps MEM 180 ps WB 100 ps (a) What is the cycle duration? Explain why. (a) Draw a diagram like the one at the bottom of slide 57 for the four instructions above. You should consider that there are no structural hazards and that data hazards are taken care of by stalling the processor. Indicate by a bubble each cycle in which the processor stalls. How long does it take to execute all four instructions? (b) Consider now that forwarding can be used to mitigate data hazards. Draw a diagram like the one at the bottom of slide 57 for the four instructions above. Clearly indicate any forwardings that may be needed to mitigate processor stalling. You should consider that there are no structural hazards. Indicate by a bubble each cycle in which the processor stalls. How long does it take to execute all four instructions?